Method for casting steel wheels



, 1.920 3 Sheets-Sheet 1 Q INVENTOR t I ATTORNEYAH;

G. \NALTHER METHOD FOR CASTING STEEL WHEELS inal Filed June 5 Orig Dec. 25 R923. 3,478,41Wl

, G. WALTHER METHOD FOR CASTING STEEL WHEELS Original Filed June 5. 1920 s Sheets-Sheet 2 IN V EN TOR.

De 25, E923. 1,478,494

. G. WALTHER METHOD FOR CAS'IING STEEL WHEELS Original Filed June 5, 1920 3 Sheets-Sheet 3 INVENTOR.

W ATTORNEYS.

h 4 4 b n Patented Dec. 25, 19235.

"htiidfid i PAT GEORGE WALTHER, OF DAYTON, OHIO, ASSIGNOR TO THE DAYTON STEEL FOUNDRY COMPANY, 01 DAYTON, OHIO, A. CORPORATION OE OHIO.

METHOD FOR CASTING- STEEL VTHEELS.

Original application filed June 5, 1820, Serial No. 386,856. Divided and this application filed December To (ZZZ whom it may concern:

Be it known that I, GEORGE lVALTrrER, a citizen of the United States, residing at Dayton, in the county of Montgomery and State of Ohio, have invented certain new and useful Improvements in Methods for Cast ing Steel -Wheels, of which the following is a specification, reference being had therein to the accompanying drawing.

My invention relates to casting steel wheels, and in particular to a method for this purpose.

My method is directed to meeting the problem of quantity production of cast steel wheels, primarily for automotive equipment. In order to facilitate this production, I have found it essential to reduce the number of operations in making the cores and to pro.- vide a ready means for assembling and disassembling the cores. It is also an object of my invention to use cores of either green or dry sand. It is possible by my invention to use reen sand entirely for the cores, forming the spokes and rim. It is another object of my invention to provide a method of manufacture which shall reduce the necessity for the employment of skilled labor in castin wheels of this character.

Tteferring to the drawings, Figure 1, is a plan view of the supporting arbor, and the cores;

Fig. 2, is a plan View of a core carrying frame used for adjusting the units of the core in position;

Fig. 3, is a side elevation of a vertical section showing the cores in position prior to the casting of the wheel with the core carrying frame positioning the cores; and

Fig. 1, is a view of a flask with the cores in position, showing in section the supporting, arbors for the cores.

Referring to Figure 1, it will be observed that there is an outer ring 1 divisible at points 22 into segments, a complete set of segments completing the circle.- To each segment of the ring is connected at an angle thereto the arbor 3 with projections 4 thereon to support the sand of the rim and spoke core 5. The bridges of the metal Wheel forming a part of its outer rim are seen at 6-6 while the inner wall of the rim is at 7. The wall of the spokes is 8. The hub core is at 9, supported by the arbor 10. The

Serial No. 524,619.

arbor 10 of the hub and the arbor 3 of the spokes are connected to one another at 11 in any suitable manner.

The core for the spokes and rim and the hub is supported by the arbor '3 and is made up either of reen or dry sand, with the arbor 3 imbed Led therein. 12 is a hook attached to the segment of the supporting frame, the use of which will be described in connection with Figures 2 and 8.

Referring to Figure 2, we see an annular carrying frame 13 with handles 141 1. Across the frame are braces and supporting members 15. Centrally located on the cross bar 15 of the frame is a clamping hook 16 rotated and thereby depressed or elevated by the hand wheel 17. Thepurpose of this hook is clamp the arbor l0 and the arbors 3 to the frame 13, as will be more clearly seen in Figure 3. Above the members 5 is a central spacing block 18 which serves to assist in clamping the cores and their arbors in position. On the periphery of the ring 13, in Figure 2, will be seen another clamping hook 19 and its hand wheel 20 which is used to clamp in position the ring I seen in section in Figure 3. The hook 19 engages with the hook 12 on the ring 1 so that the clamping can be readily efiected by rotatin the wheel 20. Only one of these hand whee s and hooks on the periphery of the ring 13 is shown. Corresponding wheels are located on this ring for the other spokes depending upon the number of spokes. The installation shown is typical of the arrangements.

in Figure 3, 21 is the flask wall and 22 the sand suitably impressed by the pattern adapted for this purpose, to determine the location of the outer wall of the wheel. 23 is a positioning pin of the carrying frame. This pin passes through the aperture 24L in the lug 25 of Figures 2 and 3. This pin '23 projects through a spacin; block 26 and a portion of the flask 21 at 2 By this standardized arrangement I am enabled with relatively unskilled labor to quickly position the respective elements of the cores, to util ze green sand and upon the casting of the wheel to withdraw the rings and the spoke arbors for use at another time. The hub arbor becomes an integral part of the wheel and is broken away upon the completion of the casting. The only loss is the hub arbor, new ones of which are employed for each of the castings.

In Fig. 4, is shown a flask, cores, etc. in section. It illustrates also the method of connection between'the spoke arbor and the hub arbor. In one instance it is adjustable and in the other instance it is merely a depression in the spoke arbor to receive the projection of the hub arbor.

I desire to comprehend within the-scope of my invention its equivalents and the modificationsthat are within its scope.

This application is a division of my appli cation Serial No. 386,850.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent, is

1. In a method of moulding wheels, forming' the outer dimensions of said wheel by a pattern in a' flask containing the sand, forming a rim and spoke core adjacent a segment of a ring and its spoke arbor, placing a plurality of said segments constituting a ring together with their spoke arbors and their cores within said flask, forming a hub core about a hub arbor, and positioning said segments, arbors and cores in said flask, whereby castings may be made and the segments and spoke arbors may be used for successive castings.

2. In a method of mouldinga wheel, forming the outside dimensions of the casting in a flask, forming a spoke and rim core within a segment of a ring and around a spoke arbor, placing a plurahty of said seg- 'ments, arbors and cores in said flask, form'- ing a hub core around'a hub arbor, placing sald hub core and said hub arbor centrally in said flask, and casting said wheel.

4-. The method of moulding a wheel, consisting in forming the core for the hub, rim

and spokes asaunit, clamping the same to a carrying frame, depositingthe same in a flaslnremoving said frame, and casting the wheel.

5. The method of moulding sisting in forming the core for the hub, spokes and rim, providing arbors in the hub and spoke portions, extending said spoke arbors through the rim portion and providing a segment of a ring for the outer end of each spoke arbor, said segments forming the outer periphery of the rim of the core, clamping said core and arbors toa frame, depositing said core in a flask, removing'the frame and clamping means, and casting the wheel. a

In testimony whereof, I aflix my signature.

GEORGE WVALTHER.

a wheel, con- 7 

